一个反复的过程允许开发团队更好地适应变化，获得反馈并将它分解到项目中去，从而尽早地减少风险，动态调整过程。

An iterative process allows the development team to better accommodate change, to obtain feedback and factor it into the project, to reduce risk early, and to adjust the process dynamically.

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给出了静力荷载下的荷载变形曲线、低周反复荷载下的荷载变形滞回曲线以及关键部位的应变数据。

The load displacement curve under static load, load displacement hysteric curve under repeated low cycle load and strain data at key points are presented.

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在4%的固定应变下，反复拉伸疲劳断裂次数高达38560次，形状回复率为100%。

Under 4% strain, the number of repeat tensile fatigue rupture is 38560 cycles and the recovery rate keeps up 100%.

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